Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933628Ab3JORxR (ORCPT ); Tue, 15 Oct 2013 13:53:17 -0400 Received: from mail-pd0-f177.google.com ([209.85.192.177]:63234 "EHLO mail-pd0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933013Ab3JORxP (ORCPT ); Tue, 15 Oct 2013 13:53:15 -0400 Message-ID: <525D8106.9020304@zankel.net> Date: Tue, 15 Oct 2013 10:53:10 -0700 From: Chris Zankel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130404 Thunderbird/17.0.5 MIME-Version: 1.0 To: Max Filippov CC: "Kirill A. Shutemov" , LKML , "linux-mm@kvack.org" , Christoph Lameter , Pekka Enberg , Matt Mackall , "David S. Miller" , "linux-xtensa@linux-xtensa.org" Subject: Re: CONFIG_SLUB/USE_SPLIT_PTLOCKS compatibility References: <20131014071205.GA23735@shutemov.name> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 885 Lines: 19 On 10/14/2013 04:49 AM, Max Filippov wrote: > Buddy allocator was used here prior to commit 6656920 [XTENSA] Add > support for cache-aliasing I can only guess that the change was made > to make allocated page tables have the same colour, but am not sure > why this is needed. Chris? Max, I think you are right that in an earlier attempt to support cache aliasing, we tried to allocate pages with the correct 'color', and cached pages locally (if I remember correctly). The approach we use now doesn't require that so the suggested patches are fine. (Note that cache aliasing support hasn't been committed to mainline yet) Thanks, -Chris -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/